For those seeking a reliable 24/7 indoor oxygen solution, the Serene 5 is your top choice. This 5L medical-grade machine delivers consistent high-concentration oxygen, supporting your breathing health with ease. Serene 5 Extra HighlightsFDA approved Continuous flow of oxygen from 0.5 to 5 LPM Advanced filtrationFour universal wheels for easy mobilityCPAP/BiPAP compatibility   Varon Home Oxygen Concentrator Serene 5 Description   1. Complete Accessory Set Included You'll have everything you need for worry-free oxygen therapy with the VARON home oxygen machine, the Serene 5. Our package includes all the accessories you need, so you can focus on enjoying the ease of breathing. Plus, we offer masks suitable for adults and children, catering to different age groups' needs. 2. Oxygen Therapy & NebulizerTreatment This versatile 2-in-1 machine combines the functionality of an oxygen concentrator and a nebulizer in one compact device. Two nasal cannula sets and one nebulizer set are included in the package. The included humidification bottle allows for added comfort by humidifying the oxygen with distilled or cool boiled water (though it can be used without water if preferred). 3. 93±3% High Concentration Experience exceptional respiratory support with our VARON Serene 5 5L medical-grade oxygen concentrator. It delivers high-purity oxygen at a consistent concentration of 93±3% at all flow settings adjustable from 0.5 to 5 L/min, ensuring a steady and reliable oxygen supply tailored to your therapy needs. 4. Quieter, Noise Below 43dba Equipped with a powerful oil-free air compressor, the VARON Serene 5 operates quietly at under 43dB, making it perfect for quiet use during the night. Its rapid heat dissipation and low energy consumption ensure efficient operation for continuous oxygen delivery 24/7.  5. Easy To Operate The intuitive LCD screen panel makes operation simple. You can effortlessly set auto shutdown times (10 to 2400 minutes) and monitor essential information such as oxygen levels and internal pressure. The safety indicators can timely remind you of malfunctions including power issues, low pressure, high pressure/temperature, or low oxygen concentration. Furthermore, the device features four universal wheels for easy mobility from room to room, ensuring reliable and convenient oxygen supply wherever you go within your home. 6. Wide Application This medical-grade home oxygen concentrator is ideal for various users, including patients, the elderly, pregnant women, workers, athletes, and students. Moreover, It is also compatible with our CPAP/BiPAP machines (sold separately). Try using them together for enhanced treatment if you have sleep apnea.Get the VARON Serene 5 now to enhance your respiratory health with its ultimate performance, convenience, and comfort.   Specifications Oxygen Flow: 0.5-5L/minOxygen Concentration: 93±3%Noise: ≤43dBOutlet Pressure: 0.04-0.07MpaWeight: 36.81 lbsSize: 11x13.7x20.1 inchesPower Supply: AC110V / 60Hz   Serene 5 Components 1X Main machine1X Humidification Bottle2X Nasal Cannula Sets1X Nebulizer Set2X Primary Filters2X Secondary Filters1X Power cord3X User Manuals（check the online manual here）